Ceramic heater



FIG. 1 is a perspective view of the design.

FIG. 2 is a front view of the design.

FIG. 3 is a rear view of the design.

FIG. 4 is a left view of the design.

FIG. 5 is a right view of the design.

FIG. 6 is a top view of the design; and,

FIG. 7 is a bottom view of the design.

The broken lines depict portions of the ceramic heater and form no part of the claim. 

CLAIM The ornamental design for ceramic heater, as shown and described. 